London July 7 2022: Boris Johnson will resign as Conservative leader today - he will continue as Prime Minister until the autumn.
A Conservative leadership race will take place this summer and a new Prime Minister will be in place in time for the Tory party conference in October.
Earlier in the day, Caroline Johnson has resigned as vice chair of the Conservative Party.
In her resignation letter, the Conservative MP for Sleaford & North Hykeham said she hadn't arrived at the decision "lightly" and it had been a "privilege" to serve in her position.
"It is with great sadness, however, that I recognise that over time the cumulative effect of your errors of judgement… have squandered the goodwill of our great Party," Johnson wrote to the PM.
"I believe that attempting to stay when the writing is on the wall can only damage our Party and therefore our country."